diff --git a/src/matrix/room/Room.js b/src/matrix/room/Room.js
index a4dcff0a..c9d08e05 100644
--- a/src/matrix/room/Room.js
+++ b/src/matrix/room/Room.js
@@ -354,7 +354,7 @@ export class Room extends EventEmitter {
         let emitChange = false;
         if (summaryChanges) {
             // if we joined the room, we can't have an invite anymore
-            if (summaryChanges.membership === "join" && this._summary.data.membership !== "join") {
+            if (summaryChanges.membership === "join" && this.membership !== "join") {
                 this._invite = null;
             }
             this._summary.applyChanges(summaryChanges);